The Android Open Source Project (AOSP) team began rolling out CyanogenMod10.1, aka CM10.1 last month for a bunch of Samsung devices including Galaxy Note 2 (N7100) and the major U.S. variants of Galaxy S3. CM10.1, the latest version of one of the popular custom ROMs available for various Android devices, is based on Android 4.2.1 Jelly Bean (Build: JOP40D).
CyanogenMod, designed to increase performance and reliability over stock Android for your device, is a free, community built, aftermarket firmware distribution of Android 4.2 Jelly Bean. CyanogenMod offers features that you won't find in the official firmware made available by vendors of the supported devices. Some of the significant Android 4.2.1 Jelly Bean features include gesture typing, lock-screen widget, multi-user support, new daydream feature, new quick settings option, photo sphere, new camera app, miracast display and improved Google Now, among others.
The below tutorial includes an extensive detailing on "how to install CM10.1 Android 4.2.1 Jelly Bean on various U.S. variants of Samsung Galaxy S3, including carriers like Verizon, Sprint, T-Mobile, AT&T, US Cellular and Cricket." It should be noted that CM10.1 ROM is in the nightly phase now, so there could be flaws. These issues are expected to be fixed in a short while as development progresses.
Before you go ahead with installation, here are the prerequisites that you need to be aware of:
- Have a proper backup of your data.
- The device should have at least 80 percent of battery power.
- USB driver must be installed for Samsung Galaxy S3 in your PC. [download here]
- USB Debugging must be enabled.
- Backup your EFS Folder.
- Your device should be rooted and should have ClockworkMod Recovery Installed.
- Flashing this ROM on your Galaxy S3 will increase your binary counter.
- Make sure you do not skip Nandroid backup, NEVER, as it's very helpful if this custom ROM doesn't work the way you wanted.
Note: iTechPost cannot be held responsible if anything goes wrong. You should proceed at your own risk.
Procedure:
Step 1: Download the appropriate CM10.1 Android 4.2.1 Jelly Bean ROM for your Galaxy S3.
- Sprint Samsung Galaxy S3 - CM10.1 4.2.1 Jelly Bean ROM For Samsung Galaxy S3 L710 [Filename: cm-10.1-20121231-NIGHTLY-d2spr.zip]
- Verizon Samsung Galaxy S3 - CM10.1 4.2.1 Jelly Bean ROM For Samsung Galaxy S3 I535 [Filename: cm-10.1-20121231-NIGHTLY-d2vzw.zip]
- T-Mobile Samsung Galaxy S3 - CM10.1 4.2.1 Jelly Bean ROM For Samsung Galaxy S3 T999 [Filename: cm-10.1-20121231-NIGHTLY-d2tmo.zip]
- AT&T Samsung Galaxy S3 - CM 10.1 4.2.1 Jelly Bean ROM For Samsung Galaxy S3 I747 [Filename: cm-10.1-20121213-UNOFFICIAL-d2att.zip]
- US Cellular Samsung Galaxy S3 - CM10.1 4.2.1 Jelly Bean ROM For Samsung Galaxy S3 R530 [Filename: cm-10.1-20121231-NIGHTLY-d2usc.zip]
- Cricket Samsung Galaxy S3 - CM10.1 4.2.1 Jelly Bean ROM For Samsung Galaxy S3 R530C [Filename: cm-10.1-20121231-NIGHTLY-d2cri.zip]
Step 2: Download Google Apps [Filename: gapps-jb-20121212-signed.zip].
Step 3: Next, connect your Galaxy S3 to your PC using a USB cable.
Step 4: Copy downloaded files to the SD card of your phone, but do not extract them.
Step 5: Disconnect the USB and switch off your phone.
Step 6: Boot into recovery in your Samsung Galaxy S3 by pressing and holding the Volume Up, Power and Home buttons simultaneously until the Samsung logo appears on screen.
Step 7: Now release the buttons and hold them again. At this point, you will see ClockworkMod recovery screen soon. Browse between options in recovery using Volume keys while using Power key to select an option.
Step 8: Perform a Nandroid backup of your existing ROM by selecting Backup and Restore, then on the next screen, selecting Backup again. Once the backup is complete, go back to the main recovery menu.
Step 9: Here, perform the data wiping task by selecting wipe data/factory reset. Now select Yes on the next screen to confirm the action. The process may take a few minutes, so wait until the data wipe is completed.
Step 10: Select install zip from SD card, then select choose zip from SD card. Then, locate the suitable CM10.1 Android 4.2.1 Jelly Bean ROM, which you downloaded in Step 1, and select it by pressing Power button. You should confirm installation by selecting Yes - Install _____.zip on the next screen. The ROM installation will then begin.
Step 11: Upon completion of ROM installation, repeat step 10, but choose the gapps-jb-20121212-signed.zip file instead of ROM zip to install the Google Apps package.
Step 12: When the installation process is complete, return to the main recovery menu and select reboot system now to reboot the phone and boot up into customized Android 4.2.1 Jelly Bean ROM CM10.1.
[Source: Android Jinn]
